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The NON-RESET mode (2I) video out
Normal-speed
This mode outputs the video signal at 2 V after the trigger
pulse is input.
You cannot set the timing (from the trigger input to the video
signal output) but the V sync signal frequency is constant. This
mode is effective in cases where the image processor requires
a constant period (frequency) V sync signal.
The video signal is output at 2 V from the trigger input
regardless of the S7-2 (1 V/3 V video output) switch setting
on the SG-235 board.
The trigger pulse input polarity is set with the S5 switch on
the SG-235. The WEN pulse output polarity is set with the
S7-4 switch on the SG-235 board.
2 µs to 10 ms (TTL)
Trigger pulse
1 ⁄ 60 s
Video output 1
V sync signal
Video output 2
WEN pulse
(–1 V)
WEN pulse
(0 V)
Timing chart for NON-RESET mode (2I) video signal output
Trigger pulse interval:over 3 V
1 ⁄ 60 s
1 ⁄ 60 s
Video signal
EVEN
ODD ⁄ EVEN
ODD
ODD ⁄ EVEN
High-Speed
The shutter speeds compatible with this function are 1/10000 to
1/100000 sec. To set to high speed, set the S7-5 switch on the SG-
235 board to ON. You can also set the trigger pulse width (T2).
2 µs to 90 µs (TTL)
Trigger pulse
T
T
2
3
T
1
1 ⁄ 60 s
Video output 1
V sync signal
Video output 2
WEN pulse
(–1 V)
WEN pulse
(0 V)
T1: Set with the S6 switch on the SG-235 board.
T2: Set externally (T2 < T1).
T3: Exposure duration
Timing chart for high-speed NON-RESET mode (2I) video
signal output
Trigger pulse interval:over 3 V
1 ⁄ 60 s
1 ⁄ 60 s
Video signal
EVEN
ODD ⁄ EVEN
ODD
ODD ⁄ EVEN
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